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Periodic Table of Elements

Element Lutetium - Lu

Comprehensive data on the chemical element Lutetium is provided on this page; including scores of properties, element names in many languages, most known nuclides of Lutetium. Common chemical compounds are also provided for many elements. In addition technical terms are linked to their definitions and the menu contains links to related articles that are a great aid in one's studies.

Lutetium Menu

• Lutetium Page One
  • Overview of Lutetium
  • Lutetium's Name in Other Languages
  • Atomic Structure of Lutetium
  • Chemical Properties of Lutetium
  • Physical Properties of Lutetium
  • Regulatory / Health
  • Who/When/Where/How
• Lutetium Page Two
  • Nuclides / Isotopes
  • Potential Parent Nuclides

Overview of Lutetium

• Atomic Number: 71
• Period: 6
• Series: Lanthanides

Lutetium's Name in Other Languages

• Latin: Lutetium
• Czech: Lutecium
• Croatian: Lutecij
• French: Lutécium
• German: Lutetium - s
• Italian: Lutezio
• Norwegian: Lutetium
• Portuguese: Lutécio
• Russian: Лютеций
• Spanish: Lutécio
• Swedish: Lutetium

Atomic Structure of Lutetium

• Atomic Radius: 2.25Å
• Atomic Volume: 17.78cm³/mol
• Covalent Radius: 1.56Å
• Cross Section (Thermal Neutron Capture) σ_a/barns: 84
• Crystal Structure: Hexagonal

  

• Electron Configuration:

  1s² 2s²p⁶ 3s²p⁶d¹⁰ 4s²p⁶d¹⁰f¹⁴ 5s²p⁶d¹ 6s²

• Electrons per Energy Level: 2,8,18,32,9,2

  Shell Model
  

• Ionic Radius: 0.848Å
• Filling Orbital: 4f¹⁴
• Number of Electrons (with no charge): 71
• Number of Neutrons (most common/stable nuclide): 104
• Number of Protons: 71
• Oxidation States: 3
• Valence Electrons: 5d¹ 6s²

  Electron Dot Model
  

Chemical Properties of Lutetium

• Electrochemical Equivalent: 2.176g/amp-hr
• Electron Work Function: 3.3eV
• Electronegativity: 1.27 (Pauling); 1.14 (Allrod Rochow)
• Heat of Fusion: 18.6kJ/mol
• Incompatibilities:

• Ionization Potential
  • First: 5.4259
  • Second: 13.888
  • Third: 20.957
• Valence Electron Potential (-eV): 50.9

Physical Properties of Lutetium

• Atomic Mass Average: 174.967
• Boiling Point: 3668K 3395°C 6143°F
• Coefficient of lineal thermal expansion/K^-1: 8.12E^-6
• Conductivity

  Electrical: 0.0185 10⁶/cm Ω
  Thermal: 0.164 W/cmK

• Density: 9.84g/cc @ 300K
• Description:

  Silvery rare earth metal. Lutetium is the hardest and densest of the rare-earth metals.

• Elastic Modulus:
  • Bulk: 47.6/GPa
  • Rigidity: 27.2/GPa
  • Youngs: 68.6/GPa
• Enthalpy of Atomization: 398 kJ/mole @ 25°C
• Enthalpy of Fusion: 18.7 kJ/mole
• Enthalpy of Vaporization: 355.9 kJ/mole
• Flammablity Class:
• Freezing Point: see melting point
• Hardness Scale
  • Brinell: 893 MN m^-2
  • Vickers: 1160 MN m^-2
• Heat of Vaporization: 355.9kJ/mol
• Melting Point: 1936K 1663°C 3025°F
• Molar Volume: 17.78 cm³/mole
• Physical State (at 20°C & 1atm): Solid
• Specific Heat: 0.15J/gK
• Vapor Pressure = 2460Pa@1663°C

Regulatory / Health

• CAS Number
  • 7439-94-3
• OSHA Permissible Exposure Limit (PEL)
  • No limits set by OSHA
• OSHA PEL Vacated 1989
  • No limits set by OSHA
• NIOSH Recommended Exposure Limit (REL)
  • No limits set by NIOSH
• Levels In Humans:
  Note: this data represents naturally occuring levels of elements in the typical human, it DOES NOT represent recommended daily allowances.
  • Blood/mg dm^-3: n/a
  • Bone/p.p.m: n/a
  • Liver/p.p.m: n/a
  • Muscle/p.p.m: n/a
  • Daily Dietary Intake: n/a
  • Total Mass In Avg. 70kg human: n/a
• Discovery Year: 1907
• Name Origin:

  From Lutetia the ancient name of Paris.

• Abundance of Lutetium:
  • Earth's Crust/p.p.m.: 0.51
  • Seawater/p.p.m.:
    • Atlantic Suface: 1.4E-07
    • Atlantic Deep: 0.0000002
    • Pacific Surface: 6E-08
    • Pacific Deep: 4.1E-07
  • Atmosphere/p.p.m.: N/A
  • Sun (Relative to H=1E¹²): 5.8
• Sources of Lutetium:

  Found with ytterbium in gadolinite and xenotime. Its chief ores are monazite and bastnasite. Around 10 tons are produced globally on a yearly basis. The primary mining areas are USA, Brazil, India, Sri Lanka, Australia and China.

• Uses of Lutetium:

  Used in alloys and can be used as a catalyst in cracking, hydrogenation, polymerization and alkylation. It's primary use is in chemical research.

• Additional Notes:

Lutetium Menu

• Lutetium Page One
  • Overview of Lutetium
  • Lutetium's Name in Other Languages
  • Atomic Structure of Lutetium
  • Chemical Properties of Lutetium
  • Physical Properties of Lutetium
  • Regulatory / Health
  • Who/When/Where/How
• Lutetium Page Two
  • Nuclides / Isotopes
  • Potential Parent Nuclides

References

A list of reference sources used to compile the data provided on our periodic table of elements can be found on the main periodic table page.

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Citing this page

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Kenneth Barbalace. Periodic Table of Elements - Lutetium - Lu. EnvironmentalChemistry.com. 1995 - 2024. Accessed on-line: 12/21/2024
https://EnvironmentalChemistry.com/yogi/periodic/Lu.html
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